Re: Water Leak Reply #25 – June 29, 2018, 08:23:57 pm Leak caused by deteriorated washers on the pex lines feeding the back of the water heater. More drip than running water. Don't know about the white washers but the ones on the lines were black and the ones I replaced them with were black. Found attached at Home Depot and had to shave them down as the we're too tall. Hardest part was unscrewing and reattaching the supply lines one handed through the small round access hole in wall of the adjacent bay. Quote Selected
Re: Water Leak Reply #26 – June 29, 2018, 08:38:39 pm Randy,That will work a while but for your info the replacement washer info you need is PEX/ ZURN # QSETFC 1/2" washers. A good plumbing store will most likely give you a couple as they usually have some in the bottom of some of there bins that have fell off fittings. Yep that is the part number.Mike Quote Selected 2 Likes
Re: Water Leak Reply #27 – June 29, 2018, 10:09:00 pm Mike, thanks. Do you have a source? Amazon sellers want $5.40 per washer...can that be true? Quote Selected
Re: Water Leak Reply #28 – June 29, 2018, 10:20:52 pm The last time I bought some (about 6 months ago) they were ~$15 for 100. For the AMZ price of $5.40 each they should at least give you a kiss... A PEX plumbing supply company will have them in bulk so look around. Mike Quote Selected 2 Likes
Re: Water Leak Reply #29 – June 30, 2018, 11:10:30 am I've always just picked up a few at a local RV store. They are cheap and look and feel just like the originals. Never had any problems.jor Quote Selected 2 Likes
Re: Water Leak Reply #30 – June 30, 2018, 07:09:50 pm Now that I understand our plumbing better I'm going to replace all the 18 year old rubber cone washers to avoid future leaks! Quote Selected 2 Likes
Re: Water Leak Reply #31 – June 30, 2018, 07:46:37 pm I bought a few last year at a RV place in Knoxville, TN for .69 each. Quote Selected 1 Likes
Re: Water Leak Reply #32 – October 14, 2019, 06:36:35 pm We were getting ready for a trip to New Mexico when I found water under the coach. Took the outside water closet apart to investigate. Only thing I could figure is that the outside faucet must have been open a bit. Dried everything out zipped it all up connected it to water; same problem. Only thing I can think of at this time is a leaking valve in the bathroom vanity. There are no water lines that run rearward of that compartment. No time to play now will have to look into it later. Not gonna take the coach took NM. Water my nemesis.Roland Quote Selected
Re: Water Leak Reply #33 – October 18, 2019, 03:58:01 pm This one is a b&_#h. I see the water dripping like Niagra Falls outside under the rear bulkhead. Dry beneath the vanity, shower, toilet. Dry on top of the tanks where the water lines run. Wet in the compartment where the grey and black water tanks are Wet behind the panel in the outside water closet, looks like it's coming from under the tanks. All water fittings are dry. It's fresh water that is leaking, only leaks when the lines are pressurized. Looks like the water is coming from under the grey and black tanks but I don't believe there are water lines under there. Yes it's fresh water that is leaking. Water pump compartment is dry. From what I can tell it's been leaking a while. Rear bulkhead is shot. Keep tearing things apart till I find the sucker.Roland Quote Selected
Re: Water Leak Reply #34 – October 18, 2019, 07:57:31 pm Roland I had the same problem. Couldn't find it anywhere! Turned out the "spun in" OEM fitting into the bottom of the fresh water tank that connected to the fresh water intake and low point tank drain. It wasn't a visible volume (or so it seemed) but spread across the tanks and water close and pump/water heater area is small amounts. We ultimately pulled the belly skin and realized we needed a basement structure rebuild. On the next trip, we found a stream of water coming out from between the skins. literally after weeks of searching we found two weeping, dripping polybutyl swivel connectors. We replaced those and pipe with PEX and flair fittings and so far, so good. Sorry for the long story. The fittings were attached to the turn off the OEM regulator after our mechanical reel and at a turn behind the water closet wall. Quote Selected 1 Likes
Re: Water Leak Reply #35 – October 19, 2019, 02:21:59 pm Thanks for the info Alan. I'm wondering if anyone has a schematic for the plumbing in a 1993 U280? Kinda working blind. I'll replumb the whole coach if I have to, but would like to see how FT ran the lines. I hadn't checked the ice maker yet did that this morning and yep it's dry. Draining the fresh water tank now before I go any further. The leak is somewhere in the pressurized lines whether they are pressurized by outside supply or by the water pump. Gonna be disconnecting lines and I don't need extra water coming out of the tank.And yes my pump cycles but we have an RO system for drinking and cooking water with a seven gallon tank so it's difficult too determine if you have a leak with the pump on. In addition we always keep the pump off unless we are using water, compounds the issue.Roland Quote Selected 1 Likes
Re: Water Leak Reply #36 – October 19, 2019, 04:21:59 pm Just an FYI from experience with original post. Leakin fittings on the back of the water heater are at the extreme inside of the water pump bay on our coach. Because of a slight side to side lean toward drivers side it appeared water pump bay was dry and water seemed to originate from the "utility" bay side leading me to incorrectly concentrate on water fill side. Eventually I discovered that although water was showing up on drivers side utility bay it was cut ally originating in the passenger side water pump bay. I now routinely reach up in the back of the water heater to check. Quote Selected 2 Likes
Re: Water Leak Reply #37 – October 23, 2019, 05:57:56 pm I believe I have found the problem. I removed the expansion tank and pressurized the system. Left it pressurized for four hours and no leaks. I will leave the system pressurized overnight and see what happens. The bladder in the expansion tank is toast. I think water was leaking from the expansion tank. My tank is the original that was installed in 1993. Will be looking for a replacement but I will also look for an alternative place for it. May use one of the tanks I have four RO water. Not full-time any longer so a 3 1/2 gallon RO tank should be OK. I can use the second tank for a water supply expansion tank. Roland Quote Selected 3 Likes
Re: Water Leak Reply #38 – October 24, 2019, 09:31:31 am Quote from: Roland Begin – October 23, 2019, 05:57:56 pmMy tank is the original that was installed in 1993. Will be looking for a replacement but I will also look for an alternative place for it. Roland,I moved our tank from the wet bay to inside the coach under the bathroom sink. Opens up the water pump/water heater bay area - much easier to work on leaks and other stuff.Water Pump Accumulator Tank Quote Selected
Re: Water Leak Reply #39 – October 24, 2019, 10:46:20 am Nice setup Chuck. May follow your example. Makes for a cramped space where it is now that's for sure. Still running tests at the moment. left the water pump on all night no leak this AM. Shutoff the water pump and turned the outside water spigot on shouldn't make a difference but will leave it on for 24 hours. If I don't have any leaks I will consider the problem solved and button everything up.Roland Quote Selected 1 Likes
Re: Water Leak Reply #40 – October 24, 2019, 12:19:35 pm Quote from: Chuck & Jeannie – October 24, 2019, 09:31:31 amRoland,I moved our tank from the wet bay to inside the coach under the bathroom sink. Opens up the water pump/water heater bay area - much easier to work on leaks and other stuff.Water Pump Accumulator TankGreat idea! The tank gets in the way and I could probably store filters in there. You have to lie on your back to do any work behind it.Pierce Quote Selected
Re: Water Leak Reply #41 – October 26, 2019, 05:52:46 pm #@$& water. Installed the new expansion tank, got the water hooked up and turned on and I still have a leak. This tank is pressurized at 40#, couldn't pressurized the old one. Water pump compartment is dry and all fittings are dry. Water and electrical hookup compartment driver's side wet but all fittings are dry. Water dripping from the bulkhead. I had everything pressurized with water without the expansion tank and no leak. All my fittings are dry. Back of water heater dry. All water fittings on the driver's side are dry. Water tank is 3/4 full. Almost seems like the tank itself is leaking from the bottom. Not sure how to test for that. That tank does not look like it's easy to replace. Time to watch some football.Roland Quote Selected
Re: Water Leak Reply #42 – October 26, 2019, 06:39:45 pm If it is the tank, should leak the same amount with pump on or off, shore water on or off (the latter, assuming the check valve in the pump is not leaking and the fill valve is closed and not leaking-- if either not functioning it would fill/overfill the tank). Quote Selected
Re: Water Leak Reply #43 – October 26, 2019, 06:56:12 pm Thank you Brett you found my leak. After reading your post I Went out and checked the audit monitor. Audit monitor showed the fresh water tank full but I only filled it to the 3/4 mark. So the water is leaking by the tank fill valve under the vanity or the pump. When I was testing the system under pressure during my troubleshooting I didn't give it enough time to fill the top of the tank before I buttoned stuff up. Not sure why it's leaking inside and not through the overflow hose but I'll take care of that. I have a spare pump and with the shutoffs I have it's easy to replace so I'll try that first then go to the valve.Roland Quote Selected
Re: Water Leak Reply #44 – October 31, 2019, 10:36:29 am It's never easy.I drained the system and changed out the water pump because it was the easiest to switch, read on and you will understand, I had a spare pump and it seemed to me that the pump diaphragm was the more likely culprit. Filled the fresh water tank to the the 1/4 mark then closed for valve under the vanity sink. Left the system pressurized and a few hours later I checked the water level and don't you know the level was at the half full mark. So now I have too change out the water fill valve under the vanity. As an aside during this process the kitchen sink drain decided to start leaking. It was the original drain. I had to use a dremel tool to get the drain off. Was not that difficult too replace but enough already.To access the plumbing under the vanity I have to remove the bottom drawer. BUT the toilet is in the way. So I have too remove the toilet to remove the bottom drawer. Several years ago I bought a replacement flap for our Microphore toilet, never installed it cause I didn't want to remove the toilet. Guess I'll install it now.It's never easy.Roland Quote Selected 2 Likes
Re: Water Leak Reply #45 – October 31, 2019, 12:09:34 pm Looks like you are near the end of the problem. Hate it when one thing leads to another. Hope all goes as planned now. Quote Selected
Re: Water Leak Reply #46 – October 31, 2019, 04:44:18 pm Finally got the fill valve removed and yep it's was sleeping water. BUT that is not my problem. Oh and I pressure checked the water pump diaphragm and that's OK. Through all of this I've wondered how an overfull fresh water tank can leak in the basement. It didn't make sense. And we never leave the pump on and we are never hooked to water. The leak started when I hooked up to water cooled the tank to 3/5 and left the system pressurized. A leaking diaphragm or a bad fill valve would cause the tank to overflow but not in my basements. Not unless the overflow hose is plugged and it's not. My leak is in the fresh water tank itself as far as I can tell. The water is coming from the compartment where the fresh water tank is located (looks like it's coming from under the tank) going across to the wet bay and out. As I said when I began this saga water is my nemesis.Anyone ever exchange a fresh water tank in a U280? Is it a big deal or am I putting the coach in a salvage yard? Sure looked like more then I want to tackle. Well wouldn't do that just yet we'll just keep our little motel room for family visitors. But eventually that's where it'll end up. Works fine hooked up to water as long as the tank is empty.Roland Quote Selected
Re: Water Leak Reply #47 – October 31, 2019, 07:50:09 pm Quote from: Roland Begin – October 31, 2019, 04:44:18 pmA leaking diaphragm or a bad fill valve would cause the tank to overflow but not in my basements. Not unless the overflow hose is plugged and it's not. My leak is in the fresh water tank itself as far as I can tell. The water is coming from the compartment where the fresh water tank is located (looks like it's coming from under the tank) going across to the wet bay and out. As I said when I began this saga water is my nemesis.Anyone ever exchange a fresh water tank in a U280? Is it a big deal or am I putting the coach in a salvage yard? Sure looked like more then I want to tackle. Well wouldn't do that just yet we'll just keep our little motel room for family visitors. But eventually that's where it'll end up. Works fine hooked up to water as long as the tank is empty.Roland[/quote...the corrugated white and green overflow hose connection to the tank is not a very sufficient seal. If it is anything like mine it is very difficult to see if at all, it's behind the hot water tank. Quote Selected
Re: Water Leak Reply #48 – October 31, 2019, 08:11:46 pm Quote from: Doug W. – October 31, 2019, 07:50:09 pm...the corrugated white and green overflow hose connection to the tank is not a very sufficient seal. If it is anything like mine it is very difficult to see if at all, it's behind the hot water tank. I am seeing a leak with the tank at 1/4 full and the water is on the driver's side of the coach. So the overflow hose doesn't come into play.I'm thinking of cutting the old tank out and installing a smaller fresh water tank. We'll only be using the coach for short trips so a hundred gallon tank isn't necessary.Roland Quote Selected
Re: Water Leak Reply #49 – October 31, 2019, 08:18:25 pm Maybe using flexseal could be appropriate? At least until you can get a handle on cost and replacing. Quote Selected
Topic: Water Leak